Personal consumer data is the fuel for information driven programs that may differentiate a firm from its competitors and create strategic advantages. However, a tension exists between the user's desire to protect personal information and the needs of online businesses for consumer data that drive customer relationship and business intelligence applications. This study explores the roles of positive and negative affect on users' trust and privacy beliefs that relate to the online disclosure of personal information. A model is tested using the responses of 301 Internet users who visited one of two commercial websites. The results indicate that positive affect has a significant effect on users' website trust and privacy beliefs that motivate online information disclosure and this effect is more pronounced for users with high Internet security concerns. The idea that positive mood-inducing website features can motivate user behavior has the potential to guide the development of websites for effective information disclosure and data collection. ?? 2013 Elsevier B.V. All rights reserved.